Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The scheme of the selection of index beat during AF. The STE results were estimated using the ratio of preceding (1) to pre-preceding (2) R-R’ interval. We selected the beat with the smallest difference between prevenient R-R’ intervals
BPM - beats per minute; HR - heart rate; STE - speckle-tracking echocardiography
